Review: ASUS GeForce GTX 660 Ti DirectCU II Top

Published by Christian Ney on 16.08.12
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Technical data / specifications

With the ASUS GeForce GTX 660 Ti DirectCu II Top you get a factory overclocked card with a custom PCB deisgn as well as a DirectCU II v2 cooler. The manufacturer claims that this baby is 7 % faster than the reference design, 20 % cooler and 5 times quieter. Thanks to the factory overclocking, binned GPU, custom cooler and reworked PCB design we can kind of believe that.

Looking at clock speeds we see that the GPU runs at 1'059 MHz standard with a minimum boost clock of 1'137 MHz. While the stock designed GTX 660 Ti runs at 915 MHz with a boost of 980 MHz. Plus our sample was clocking itself up to 1'176 MHz which is 3x 13 MHz more than the specs. No overclocking was made regarding the GDDR5 memory that follows nVidia's recommendation with a clock speed of 1'500 MHz (6'000 MHz effective).Wich results in 144.2 GB/s of memory bandwidth with the bus width of 192 Bit.

The GPU itself consists of 3.54 billion transistors. It is the same GPU you find on the GTX 670 graphics card but with a smaller memory bus (192 Bit against 256 Bit on the GTX 670) and less ROPs (24 against 32). For the record the GTX 660 Ti is also clocked like the GTX 670 for both GPU and memory.

Now looking at the phycsical specifications of the DirectCU II Top version as said before ASUS reworked the PCB, binned the core and used their own GPU cooler. The DCU II Top gets 6 digital power phases and 9 POSCAP while the reference GTX 660 Ti has only 4 analog phases and 2 POSCAP. You also find a lot of ASUS technology that helps to improve overclocking, power efficiency, noise reduction (less EMI), lifespan and so on. You also find the DirectCU II cooler v2 (the v1 was crap if you ask me) which I literally love that features two 80mm fans with 11 blades each, three 6mm heatpipes and a red/black design. I was too lazy to count the fins and calculate the dissipation surface/power but trust me, it's big. So in other words to stay simple this graphics card is: Better, faster  and stronger.



  GeFroce GTX 680 GeFroce GTX 670 ASUS GTX 660 Ti DCU II Top GeFroce GTX 660 Ti
Chip GK104 GK104 GK104 GK104
Process 28 nm 28 nm 28 nm 28 nm
Transistors 3.54 billion 3.54 billion 3.54 billion 3.54 billion
GPU clock 1'006 MHz (Boost 1'058 MHz) 915 MHz (Boost 980 MHz) 1'059 MHz (Boost 1'137 MHz) 915 MHz (Boost 980 MHz)
Shader clock 1'006 MHz 915 MHz 1'059 MHz 915 MHz
Memory 2'048 MB GDDR5 2'048 MB GDDR5 2'048 MB GDDR5 2'048 MB GDDR5
Memory clock 6'000 MHz 6'000 MHz 6'008 MHz 6'000 MHz
Memory interface 256 Bit 256 Bit 256 Bit 192 Bit
Memory bandwidth 192'400 MB/s 192'400 MB/s 144'200 MB/s 144'000 MB/s
TMUs 128 112 112 112
TAUs -- -- -- --
Shader Cores 1'536 (5D) 1'344 (5D) 1'344 (5D) 1'344 (5D)
ROPs 32 ROP 32 ROP 24 ROP 24 ROP
Shader model SM 5 SM 5 SM 5 SM 5
Maximum board power 185 Watt 173 Watt XXX Watt XXX Watt



Page 1 - Introduction Page 12 - Call of Duty Modern Warfare 3
Page 2 - Technical Data / Specifications Page 13 - BattleField 3
Page 3 - Preview / Delivery Page 14 - Crysis 2
Page 4 - Test Setup Page 15 - Dragon Age 2
Page 5 - 3DMark 11 Page 16 - S.T.A.L.K.E.R. Call of Pripyat
Page 6 - 3DMark Vantage Page 17 - The Elder Scrolls V: Skyrim
Page 7 - Unigine Heaven Page 18 - StarCraft II
Page 8 - TessMark Page 19 - Power Consumption
Page 9 - Alien vs Predator Page 20 - BenchMarks and Games Settings
Page 10 - Batman: Arkham City Page 21 - Conclusion
Page 11 - DIRT 2  



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Review: ASUS GeForce GTX 660 Ti DirectCU II Top - Graphics cards Reviews NVIDIA - Reviews - ocaholic